Defensive publication



DEFENSIVE PUBLICATION UNITED STATES PATENT OFFIYVQCE Published at the request of the applicant or owner in accordance with the Notice of Apr. 11, 1968, 849 O.G. 1221. Identification is by serial number of the application and the heading indicates the number of pages of specification, including claims, and of sheets 0! drawing contained in the application as originally filed. The file of this application is available to the public for inspection; reproduction may be purchased for 30'cents per sheet.

Applications published under the Defensive Publication Program have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.

' PUBLISHED APRIL 22, 1969 861 CG. 1019 v T 4 0.. 3 8

563 097 PHOTOTROPIC ANTHRAQUINONE CONTAINING COMPOSITIONS E Gordon C. Newland and William H. Moore, both of PD. Box 511, Kingsport, Tenn. 37662 Filed July 6, 1966. Published Apr. 22, 1969 Int. 'Cl. G03c 1/72; G02b 5/20 US. -Cl. 252-300 No Drawing. 10 Pages Specification Zhototropic compositions comprising a thermoplastic resin such ass polyolefinja-polyilinyl halide or acetal, a polyacrylic resin, a cellulose ester" 0r poly(vinyl ester), a polyester, or a polycarbonate containing about 0.001 to about 10 weight percent (preferably below about 5 weight percent) of certain selected anthraquinones, for example, anthraquinone, 1,5 diphenoxyanthraquinone, 1,6 -diphenoxyanthraquinone and 1,5 bis (p methoxyphenoxy)- anthraquinone. .t

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